Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Submarine plunges into darkness and dread
S9E11
·
The Sea Devils Part 3
To
Submarine bulkhead buckles under pressure
S9E11
·
The Sea Devils Part 3
Why These Connect
The narrative assertion
"The submarine's total power loss leaves it helpless, and the subsequent banging on the hull reveals the physical manifestation of the same force that caused the sonar failure—confirmed as the Sea Devils."
About Causal Connections
A directly causes B. The first event sets forces in motion that produce the second. These are the load-bearing connections of plot--remove one and the story structure collapses.